CN115623085A - Vending machine-oriented data transmission and analysis method and device - Google Patents

Abstract

The present application relates to a vending machine-oriented data transmission and analysis method and device. By formulating the protocol format, including fixed fields and variable data bodies, the fixed fields include major categories and small categories; the vending machine constructs a communication protocol based on the fixed fields and variable data bodies, and sends the communication protocol to the server; The received communication protocol is verified, and the verified communication protocol is sent to the data adapter for analysis, and the major and minor categories in the communication protocol are obtained; the corresponding data parser is selected according to the major and minor categories, and the The communication protocol performs data string conversion to obtain vending machine business data; among them, the vending machine business data is a variable data body; the scalability of the protocol is improved by expanding the variable data body to meet different instruction requirements.

Description

Data transmission and analysis method and device for vending machine

technical field

The present application relates to the technical field of vending machines, in particular to a vending machine-oriented data transmission and analysis method and device.

Background technique

With the development of society, self-service vending systems have become very popular in cities. Between the vending machine and the vending machine management platform, it is necessary to carry out two-way transmission and analysis of various data related to the machine. The protocol is the data format and the agreement that must be followed when transferring and exchanging data between computers, so that computers can communicate with each other. Communication, with the increase of different types of equipment and the complexity of business scenarios, it is necessary to continuously update and upgrade the protocol to meet the business scenarios, resulting in constant changes in the length and content of the corresponding protocol. However, the traditional formulation of the protocol The readability of the method is poor, and it can no longer meet the current business scenario.

Contents of the invention

Based on this, it is necessary to provide a scalable vending machine-oriented data transmission and analysis method and device for the above technical problems.

A vending machine-oriented data transmission and analysis method, the method comprising:

Formulate the protocol format, including fixed fields and variable data bodies, the fixed fields include major categories and subcategories;

The vending machine constructs a communication protocol according to the fixed field and the variable data body, and sends the communication protocol to the server;

The server verifies the received communication protocol, and sends the verified communication protocol to the data adapter for analysis to obtain the major and minor classes in the communication protocol;

Select a corresponding data parser according to the major category and the subcategory, and perform data string conversion on the communication protocol to obtain vending machine business data; wherein, the vending machine business data is a variable data body;

The requirements of different instructions are met by expanding the variable data body.

In one of the embodiments, the fixed field also includes: frame header, which indicates the starting position of the protocol; frame length, which is the number of bytes of the entire protocol data; serial number, which is used to distinguish whether the message is repeatedly sent; check digit , used to check whether the protocol meets the requirements; frame tail, indicating the end position of the protocol frame.

In one embodiment, the server verifying the received communication protocol includes: the server verifying the frame header and frame tail, frame length, and check digit in sequence.

In one of the embodiments, the server checks the frame header and the frame tail, the frame length, and the check digit in order, including: the server receives the communication protocol, checks the fixed characters of the frame header and the frame tail, and verifies After passing the minimum frame length check, the check digit check is performed after the minimum frame length check is passed.

In one of the embodiments, the major category is an identification of a major scenario, including but not limited to device data reporting and device data delivery; the minor category is a subcategory divided according to the major scenario, corresponding to the major category , including but not limited to the reporting of powered-on equipment information and the reporting of equipment temperature and humidity data.

In one of the embodiments, the application scenario is extended by modifying the major class and the minor class.

In one of the embodiments, according to the modified category and subcategory, a corresponding data parser is added on the server side.

A vending machine-oriented data transmission and parsing device, said device comprising:

Formulating a protocol module, used to formulate a protocol format, including fixed fields and variable data bodies, the fixed fields include major categories and subcategories;

A transmission module, the vending machine constructs a communication protocol according to the fixed field and the variable data body, and sends the communication protocol to the server;

The verification module is used for the server to verify the received communication protocol, and send the verified communication protocol to the data adapter for analysis to obtain the major and minor classes in the communication protocol;

An analysis module is used to select a corresponding data parser according to the major category and the subcategory, perform data string conversion on the communication protocol, and obtain vending machine business data; wherein, the vending machine business data is variable data body;

The expansion module is used to expand the variable data body to meet different instruction requirements.

The above vending machine-oriented data transmission and analysis method and device, by formulating a protocol format, include fixed fields and variable data bodies, the fixed fields include major categories and small categories; the vending machine constructs a communication protocol based on the fixed fields and variable data bodies, And send the communication protocol to the server; the server verifies the received communication protocol, and sends the verified communication protocol to the data adapter for analysis, and obtains the major and minor classes in the communication protocol; according to the major class The data parser corresponding to the selection of the subclass performs data string conversion on the communication protocol to obtain the vending machine business data; wherein, the vending machine business data is a variable data body; the variable data body is expanded to meet different instructions need. The present invention defines a variable data body by formulating a protocol format; the communication protocol is converted into a data string, which improves the readability of the protocol; the data body parser is automatically assigned to different data body parsers for parsing according to the large and small classes Instructions, it is convenient to expand the protocol for different scenarios; by expanding the variable data body to meet the needs of different instructions, the scalability of the protocol is improved.

Description of drawings

Fig. 1 is a flow chart of a vending machine-oriented data transmission and analysis method;

Figure 2 is a schematic diagram of the protocol format;

Fig. 3 is a flow chart of verifying the communication protocol format;

Fig. 4 is a schematic flow chart of parsing the communication protocol lattice;

Figure 5 is a schematic diagram of transmission and analysis in one of the embodiments;

Fig. 6 is a block diagram of a vending machine-oriented data transmission and analysis device.

detailed description

In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.

In one embodiment, as shown in FIG. 1 , a vending machine-oriented data transmission and analysis method is provided, including the following steps:

In step 202, a protocol format is formulated, including fixed fields and variable data bodies. The fixed fields include major categories and subcategories.

Specifically, as shown in FIG. 2 , it is a schematic diagram of a protocol format, including a frame header, a category, a category, a frame length, a serial number, a data body, a parity bit, and a frame trailer. The data body is variable, and different data bodies can be formulated according to different business scenarios.

The frame adopts an indefinite length frame format, and the transmitted data is transmitted in hexadecimal form, without using ASCII code (American Standard Code for Information Interchange).

The frame header is a specific character of 2 bytes, indicating the starting position of the protocol frame.

The category is 1 byte, which represents the identifier of a large scenario, such as device data reporting, and device data delivery using different category identifiers in sequence.

The sub-category is 1 byte, and it is divided into sub-categories according to the large-scale scenarios. For example, the reporting of device data is divided into reporting of power-on device information, reporting of device temperature and humidity data, and so on. Corresponding to major categories, a major category contains one or more subcategories.

The frame length is 2 bytes, which is the number of bytes of the entire protocol data.

The serial number is 1 byte, which is accumulated circularly from 0-255 in the order of sending, and is used to distinguish whether the message is sent repeatedly.

The variable data body is n bytes, and the data contained in the variable data body is also different according to the instruction type. The data is transmitted in the form of strings, and each data is separated by *, which improves the readability of the data and reduces the difficulty of analysis and development.

The check digit is 2 bytes, and a specific check method is adopted. The input of the check method is all bytes except the frame header and frame tail. An important checkpoint for verifying compliance with the protocol. Because the verification method is not disclosed, it is difficult to forge the protocol, which improves the security of protocol transmission.

The end of the frame is a specific character of 2 bytes, indicating the end position of the protocol frame.

In step 204, the vending machine constructs a communication protocol according to the fixed field and variable data body, and sends the communication protocol to the server.

Specifically, the vending machine sets the IP and port for the server to accept data in the embedded program, establishes a connection with the server program through the 4G module, and the embedded program of the vending machine forms a communication protocol according to the protocol format in step 202.

Step 206, the server verifies the received communication protocol, and sends the communication protocol that passes the verification to the data adapter for analysis, and obtains the major category and minor category in the communication protocol.

Specifically, as shown in Figures 3 and 4, the communication protocol is processed, and the server program first checks whether the protocol frame meets the requirements after receiving the communication protocol. Including three aspects of verification, including fixed character verification of frame header and tail, minimum frame length verification, and check digit verification. First judge whether the frame header and frame tail are required. If it does not meet the requirements, it will move 1 byte on the received data, and then check it. If the condition is not met after 10 cycles, the protocol data will be discarded. If it passes the frame header and frame tail check, it will enter the latest length judgment of the protocol, and if it is less than 12 bytes of the latest length, it will be discarded. After judging the minimum frame length, enter the check bit judgment. The check method is equivalent to an encryption algorithm, and the input is the data except the frame header and frame tail to improve the security of protocol transmission. If the check digit data in the agreement is the same as the value output by the inspection method, it meets the requirements and enters the next processing flow; otherwise, the agreement data is discarded.

Analyze the communication protocol that passed the verification to obtain the major and minor categories, and then enter the corresponding analysis program for processing according to the agreed format. For example, the vending machine notifies the commodity shipment protocol frame: the corresponding major category is 0x29, and the minor category is 0x01, and the corresponding data parser is found for analysis through the identifier of the major category and minor category.

Step 208, select the corresponding data parser according to the category and subcategory, perform data string conversion on the communication protocol, and obtain the business data of the vending machine; wherein, the business data of the vending machine is a variable data body.

Specifically, after obtaining the data protocol, the data parser performs protocol conversion, and obtains the business data of the protocol according to the agreed format. For example, when the transaction is completed on the vending machine, the format of the data body that notifies the vending machine of the shipping instruction is: the agreed format of the data body is "*machine type*shipping information*item number list*source*combination key (additional information)*" The format is highly readable, which is conducive to improving development efficiency. The server-side program parses the data body to obtain the machine type, shipment information (including which cargo lane, shipment quantity, etc.), etc.

Step 210, expand the variable data body to meet different instruction requirements

In the above vending machine-oriented data transmission and analysis method, the variable data body is defined by formulating the protocol format; the communication protocol is converted into a data string, which improves the readability of the protocol; the data body parser automatically Different data body parsers are assigned to parse instructions, which facilitates the expansion of the protocol for different scenarios; the scalability of the protocol is improved by expanding the variable data body to meet the needs of different instructions.

It should be understood that although the various steps in the flow chart of FIG. 1 are displayed sequentially as indicated by the arrows, these steps are not necessarily executed sequentially in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and these steps can be executed in other orders. Moreover, at least some of the steps in Fig. 1 may include multiple sub-steps or multiple stages, these sub-steps or stages are not necessarily executed at the same time, but may be executed at different times, the execution of these sub-steps or stages The order is not necessarily performed sequentially, but may be performed alternately or alternately with at least a part of other steps or sub-steps or stages of other steps.

In one of the embodiments, the application scenario is extended by modifying the major class and the minor class.

In one of the embodiments, according to the modified major category and minor category, a corresponding data parser is added on the server side.

In one of the embodiments, in order to make the purpose, technical solution and advantages of the disclosed invention clearer, the present invention will be further described in detail below in combination with specific embodiments and according to the accompanying drawing 5 .

1. Formulate the protocol format based on the protocol body framework. Taking the device verification login command as an example, the major category of the login frame is agreed: 0x12, and the small category 0x21 data body: *equipment number (IMEI)*encrypted password*.

2. After the vending machine is powered on, the login command is sent to the server through the 4G network TCP communication.

2.1 The vending machine sends a login command to the server.

2.2 After receiving the agreement, the server performs verification according to the process, including frame header and frame tail, minimum frame length and check digit verification, and enters the data adapter after all pass.

2.3 The data adapter selects the corresponding data parser to analyze and process the business data of the data body according to the major category and the minor category 0x12|0x21. After parsing the IMEI+ password, compare the contents of the database. After the verification is passed, the command is sent successfully, and the vending machine successfully enters the online platform.

3. Based on the login protocol, if you want to expand the content of the protocol body, you only need to add the desired fields in the data protocol body, such as login time, and then change the data body to *equipment number (IMEI)*encrypted password*login time* , only minor adjustments to the data parser are required to meet this requirement.

4. Based on the expansion of the scene, the categories and subcategories can be modified. For example, the categories and subcategories can be changed to 0x22, 0x01 when the power-on information is reported, and the server can add the data body parser to meet the requirements.

As shown in Figure 6, a vending machine-oriented data transmission and parsing device includes:

Formulating a protocol module, used to formulate a protocol format, including fixed fields and variable data bodies, the fixed fields include major categories and subcategories;

A transmission module, the vending machine constructs a communication protocol according to the fixed field and the variable data body, and sends the communication protocol to the server;

The verification module is used for the server to verify the received communication protocol, and send the verified communication protocol to the data adapter for analysis to obtain the major and minor classes in the communication protocol;

An analysis module is used to select a corresponding data parser according to the major category and the subcategory, perform data string conversion on the communication protocol, and obtain vending machine business data; wherein, the vending machine business data is variable data body;

The expansion module is used to expand the variable data body to meet different instruction requirements.

For the specific limitations of the vending machine-oriented data transmission and analysis device, please refer to the above-mentioned limitations on the vending machine-oriented data transmission and analysis method, which will not be repeated here. Each module in the above vending machine-oriented data transmission and analysis device can be fully or partially realized by software, hardware and combinations thereof. The above-mentioned modules can be embedded in or independent of the processor in the computer device in the form of hardware, and can also be stored in the memory of the computer device in the form of software, so that the processor can invoke and execute the corresponding operations of the above-mentioned modules.

Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be implemented through computer programs to instruct related hardware, and the computer programs can be stored in a non-volatile computer-readable memory In the medium, when the computer program is executed, it may include the processes of the embodiments of the above-mentioned methods. Wherein, any references to memory, storage, database or other media used in the various embodiments provided in the present application may include non-volatile and/or volatile memory. Nonvolatile memory can include read only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in many forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Chain Synchlink DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.

The technical features of the above embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the technical features in the above embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, they should be It is considered to be within the range described in this specification.

The above-mentioned embodiments only express several implementation modes of the present application, and the description thereof is relatively specific and detailed, but it should not be construed as limiting the scope of the patent for the invention. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of protection of the patent application should be based on the appended claims.

Claims (8)

1. A vending machine-oriented data transmission and analysis method, characterized in that the method comprises: Formulate the protocol format, including fixed fields and variable data bodies, the fixed fields include major categories and subcategories; The vending machine constructs a communication protocol according to the fixed field and the variable data body, and sends the communication protocol to the server; The server verifies the received communication protocol, and sends the verified communication protocol to the data adapter for analysis to obtain the major and minor classes in the communication protocol; Select a corresponding data parser according to the major category and the subcategory, and perform data string conversion on the communication protocol to obtain vending machine business data; wherein, the vending machine business data is a variable data body; The requirements of different instructions are met by expanding the variable data body. 2. The method according to claim 1, wherein the fixed field further comprises: Frame header, indicating the starting position of the protocol; The frame length is the number of bytes of the entire protocol data; Serial number, used to distinguish whether the message is sent repeatedly; The check digit is used to check whether the agreement meets the requirements; The end of the frame indicates the end position of the protocol. 3. The method according to claim 2, wherein the checking of the received communication protocol by the server comprises: checking the frame header and frame tail, the frame length, and the check digit by the server in sequence. 4. The method according to claim 3, characterized in that, the server checks the frame header and frame tail, frame length, and check digit in order comprising: the server receives the communication protocol, and checks the frame header and frame tail The fixed characters are checked, and after the check is passed, the minimum frame length check is entered, and the check digit check is performed after the minimum frame length check is passed. 5. The method according to any one of claims 1-4, characterized in that: the large category is an identifier of a large scene, including but not limited to device data reporting and device data delivery; the small category is According to the subcategories in the big scene, corresponding to the big categories, including but not limited to the reporting of powered-on equipment information and the reporting of equipment temperature and humidity data. 6. The method according to claim 5, characterized in that: the application scenario is extended by modifying the major category and the subcategory. 7. The method according to claim 6, characterized in that: according to the modified categories and subcategories, a corresponding data parser is added on the server side. 8. A vending machine-oriented data transmission and parsing device, characterized in that the device comprises: Formulating a protocol module, used to formulate a protocol format, including fixed fields and variable data bodies, the fixed fields include major categories and subcategories; A transmission module, the vending machine constructs a communication protocol according to the fixed field and the variable data body, and sends the communication protocol to the server; The verification module is used for the server to verify the received communication protocol, and send the verified communication protocol to the data adapter for analysis to obtain the major and minor classes in the communication protocol; An analysis module is used to select a corresponding data parser according to the major category and the subcategory, perform data string conversion on the communication protocol, and obtain vending machine business data; wherein, the vending machine business data is variable data body; The expansion module is used to expand the variable data body to meet different instruction requirements.

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